Cross-chain · Base → Avalanche C-Chain
Swap ETH from Base to USDC on Avalanche C-Chain
Swap ETH from Base to USDC on Avalanche C-Chain. Native ETH leaves Base, and Circle USDC arrives on the C-Chain.
Sell the Base gas coin, 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, chain 8453. Basescan shows the account. Leave a fee remainder. There is no approval on native ETH. Receive Circle USDC at 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E on chain 43114. Snowtrace is the explorer. That is native USDC, not the old USDC.e at 0xA7D7079b0FEaD91F3e65f86E8915Cb59c1a4C664, and not Tether at 0x9702230a8ea53601f5cd2dc00fdbc13d4df4a8c7. The C-Chain is not the X-Chain. You will need AVAX to move the USDC.
Native USDC, not USDC.e
You are spending Base gas
AVAX is mandatory afterward
Wrong dollar, wrong chain
Legal
Risk disclosure
XAUConnect is a non-custodial swap aggregator. Digital assets are volatile and may lose value rapidly. Content on this page is educational and not investment advice. Verify every contract address on the official block explorer before approving a transaction.
Frequently asked questions
What is the best way to swap ETH from Base to USDC on Avalanche C-Chain?
Sell the Base gas coin, 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, chain 8453. Basescan shows the account.
Is this the old Avalanche USDC.e?
No. USDC.e is 0xA7D7079b0FEaD91F3e65f86E8915Cb59c1a4C664. This route delivers Circle's native USDC at 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E on the C-Chain, chain 43114. Check Snowtrace. If the app still displays the older address, this credit will not match it. Compare the deposit address with the native Circle contract before you sign.
Do I approve the ETH I sell?
No. Native ETH on Base is the gas coin, marked 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, and it is sent rather than approved. Leave enough on chain 8453 for the fee. If the wallet asks you to approve WETH, you selected the wrapper, which is a different route. This page sells the gas coin only.
What do I need on the C-Chain besides USDC?
AVAX, the native coin, to pay fees. USDC cannot pay them. The ETH you sold lived on Base and does not become AVAX. The X-Chain will not show this ERC-20. Stay on chain 43114 and fund AVAX before you move the Circle balance. Without it, Snowtrace can show USDC that the wallet will not send.
Trade on XAUConnect
Open the swap page with this cross-chain route pre-selected, then connect your wallet on the source chain to quote and execute. You keep the keys.
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